METHOD FOR PREDICTING AMOUNT OF CORROSION IN STEEL, SYSTEM FOR PREDICTING AMOUNT OF CORROSION IN STEEL, PROGRAM FOR PREDICTING AMOUNT OF CORROSION IN STEEL AND METHOD FOR PROPOSING STEEL

• Main Authors: HIRAIDE, Nobuhiko, YOSHIMI, Toshihiko
• Format: Patent
• Language: English
• Published: 09.05.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; TESTING

There is provided a method for predicting the amount of corrosion in a steel including a step in which, based on a weather observation value WM at a scheduled use point M of the steel, a corrosion index Q(tMi, WM) is obtained for each past observation time tMi, extremal value statistical analysis is performed on time-series data of the corrosion index Q(tMi, WM) between observation times tM1 to tMn, and a maximal value Qmax(tFi) of the corrosion index within future evaluation periods tF1 to tFn is estimated, and a corrosion amount estimation step in which a relational expression between a measured corrosion amount obtained in a corrosion test at a test point Z and the maximum value of a corrosion index Q(tZi, WZ) obtained for each observation time tZi during a test period of the corrosion test based on a weather observation value WZ at the test point Z is obtained in advance, the maximal value Qmax(tFi) of the corrosion index estimated above is introduced into the relational expression, and an estimated value of the amount of corrosion in the steel during the estimated period is obtained.